Edge-trimmer.



D. A. NILES.

EDGE TRIMMER. APPLICATION FILED AUG.2, 1913.

3 SHEETSSHEET 1.

1 1 1 5 963 Patented Nov. 3, 1914.

IN VEN TOR.

WITNESSES: ,4

THE NORRIS PETERS C0. PHOTO-undo. WASHINGTON, D. C.

v 1). A. NILES. EDGE TRIMMER.

APPLICATION FILED AUG. 2', 1918.

INVENTOR. WITNESSES: I

Am a @LULMLA- Mm? THE NORRIS PETERS C0., PHOTO-LITHO.. WASHINGTON, D c.

D. A. NILES.

EDGE TRIMMER.

APPLICATION FILED AUG. 2, 191a.

Patented Nov. 3, 1914.

3 SHEETSSHEET 3.

WITNESSES z Z/fM/LW/JUM THE NORRIS PETERS CO.. PHOTU-L|THO., WASHINGTON. D.

DWIGHT A; N na's, or wrlvpsomvnnmonr.

EDGE-TRIMMER.

Specificationof Letters-Patent; -PatentedfNov, 3,1914,

Application filed hugust2,1913. Serial No. 782,635.

To all whom it may concern:

Be it known that I, Dwreirr A. NILE-s,

a citizen 'ofthe United States, and aresident of WVindsor, in' the county of Windsor and State of Vermont, have-invented certain new and useful Improvements in Edge-Trimmers, of which the following is a specification. I

This invention relates to improvements in machines for trimming the'edges of'shoei soles and particularly to that class adapted to operate before the heels have been ap-,'

plied to the shoes and while the latterconi-a tain the lasts or, other internal support}:

ing forms.

The objects arefirst, to-provide a mech i" anism that will trim the soles of shoes uniformly with respect to the contour of'the last or form, irrespective of their-(thickness and with any desired degreeof bevel.

A second object is to provide means.

whereby the shoe is guided and controlled by automatically operated means that as sure rapidity, uniformity-and precision pf results, in addition to'the usual hand guid ing means.

Third, to provide devices combined with the mechanism that prevent any possible injury. to the upper from the cutter, and which are applicable/ to any size, kind or shape of shoe whatever without the use of extra parts or loss of time in changing.

These and other objects are attained by the novel combination and construction of parts hereinafter fully described and shown in the accompanying drawings, in which: 1

Figure l is a plan View ofan edgetrimfmer made in accordance with the lnvention.

Fig. 2 is a front elevation of the same.

Fig. 3 is a'view looking fromthe leftha'nd end of the same. section, takenfon oline 4l4 of Fig. l.' Fig. 5 isan enlarged fragmentary plan View of the guide or shoe gagingelements. Fig; 6

is a'plan view of a fragment of-theftableQ Fig."7 is an enlarged-view"showing a section of the gage'and tables'illustrating the relation of the shoe and cutter. i c s The inventionfcoinprises a table10 having end supports 11finte'grally connected at 12 and 13 at the front, bo'th. ofcwh ch, connections carry; "alined bearings 114 and V 15 being lower and upper respectively; in

these bearings is revolu'bly. mounteda verti 'cal'shaft16 formediwithastep at itslowerf' end 17 and havinga cutter20 affixed at its F igt is apartial cross extreme upper endysecured on the shaft 16 is a flangedpulley 21 driven by a quarter turn belt 22 from the pulley 23 secured on the horizontal 1 shaft 25, the same being main drive shaft havingthe drive pulleys 24t-at its end; also on thisshaft is another pulley 26 having a quarter-turn belt 27 leading to the driven pulley 28 on the vertical shaft3O mounted in bracketed bearings 31 and32 extendingfrom the left hand support 11; at thelupper end of the shaft above-"the bearing "32 is a smaller flanged driving pulley 33 having another quarter turn belt .3tleading to the pulley 35 loosely I mounted on ashort shaft 36 carried in bearings "37 and 38 transversely of the machine, belowthe lower surface of the table'lOand central of the machine, substantially .in

alinement withthe cutter shaft 16, but ate a I right anglethereto.

E On theshaft 3,6 is keyed a friction clutch; 38 so as to slide thereon and engageivwith,

the pulley 35 by means of the clutchlever 39,. fulcrumed at 4:0 and actuated through thepull rods 4:13116. 12 by the treadle lever 4A pivoted to the frame at d5; interposed between the pull rods is the end of a lever 43 pivoted at 46 to a link 47 engaged with an {extension of the bracket'arm 48, thele I ver being spaced and having arms 49 embracing and pivotally connecting with a sleeve 50, arranged on the hollow vertical bar 52 having a 'stopf53, at its lower end I and jbeingslidable within the bracket55.

f The bar '52 contains a central opening to K which is loosely fitted a stem 56, the same being screw-threaded and provided with a hand-wheel '58 having a hub adapted to rest upon the sleeve 50 in such manner that it can be raised or lowered relative thereto,

and independent of; any rectilinear movement'that'may'be imparted through .the depression 'ofthe treadlett; v j The; stem '56 supports a bracket 60 having'fside arms'61 to' which are hingedly secured a pair of lugs 62 cula-rtableij'65, a siinilar'lug 63 being centrally disposed atthe front, the same hav- 1mg connected thereto a rod 66 passing down throughthefrontof'the bracket 60 insuch -manner as to be adjustably secured therein by 'the wing-screw "67. "Thus it is readily possible to either raise or lower the table a extendingvdown, near the ends at the base of the semi-cir- 60 I mounted n bearings longitudlnally of the machine at its rear and constituting the 65 by means of the hand-wheel 58, the action constituting a substantially permanent adjustment, or by operating the treadlea temporary adjustment is obtained; by means of the hinged connections to theta-w ble and the adjustable rod 66 the table maybe tilted to such an inclination as may be desired.

A carriage 70 is arranged to move length- 82 having at their front ends means adapted to pivotally support short guide sections 84, extending between adjacent pairs of the mentioned supports to which they are piv otally secured; arms 85 extend outward from the body portion of the holder 80, and are suited to receive pivots connecting with the main portions 86of the guide, the same being extended to reach and be pivotally secured to the first mentioned adjustable arms 72. Thus it will be seen that the guide members present a substantially continuous face extending the full length of the carriage and that theguide is adjustable to suit varying conditions, both as to outline presented and position required. Below the carriage is a rack 90 adapted to engage with a spur gear 91 mounted on the shaft 36, which by reason of the friction clutch 38 can be operated at will through the treadle 44- so that rectilinear motion may be transmitted to the carriage 70. Upon release of the treadle the carriage is returned to its original position by means of the counter-weight 95 attached to a chain or cord 96 running through an opening in the table and between the guide pulleys 97 and having its end secured to the carriage. When the carriage 'is at rest under the influence of the weight 95 the cutter 20 is at the right hand end of the guide.

On the top of the table 10 immediately back of the cutter 20 is fastened a bracket 100 having an arm partially overhanging the cutter and carrying a loosely mounted wheel 102 with "which the guide is adapted to engage so as to be held against vertical movement with relation to the cutter.

The front face of the guide is constructed to engage with the shoe upper immediately above the sole and is shaped to conform to such portion of the upper. The guide is provided with an index 103 to indicate the initial positions in which different sizes of shoes shall be placed on the table 65,-at that time depressed or lowered by reason of gravity, each size of shoe being placed on the table with the point on the, sole edge at the widest and lowest portion of the sole coinciding with the index mark which brings the toe of the solecentral with the guide in the trimming operation.

The trimming operation begins at the in side of a left shoe and at the outside of a right shoe, continuing toward and around the toe and thence along the opposite side to the curved portion corresponding with the starting point, this being the main part of the trimming operation and that which requires the greatest skill. From the foregoing it will be seen that the width of the sole depends 011 the distance from the guide to the periphery of the cutter and that this distance can be varied to suit at any point. The depression of the treadle moves the work table with the shoe upon it upward into position to be operated upon by the cutterand coincidentally with the full rise of the table, the clutch is engaged, starting the carriage and guides to move past the cutter; if now the shoe be moved by hand in unison with the guide, the cutter will trim the soleto the desired outline; if it is desired to trim the shoe sole so as to extend beyond the upperon the edge opposite or away from its mate and closer on the inside or adjacent edge the ends of the guide are adjusted obliquely to the straight edge of the table so as to'present an obtuse angle againstwhich the shoe may contact, while the center part of the guide may be curved tosuit the shape of the toe; each part of the guide is movable separately in and out so that the change on the toe will' be gradual and not all in one place; a broad toed shoe is sometimes left full along the sides to the toe in which case the guides are adjusted to present substantially a straight line to the shoe, which contains a last or follower so that its outline may be maintained;

Thehand wheel 58 is for the purpose of adjusting the full rise of the table whereby the machine is adapted for operating on various thicknesses of soles; a beveled edge is obtainable by means of the devices for inclining the table. 1

The machine is adapted particularly for trimming soles from the ball or point of extreme side extension on one side to a corresponding point" on the other, including the toe; this part of the sole is trimmed with one cutter while a different cutter is used on the'shank or that portion of the sole between the-ball and heel. Thus itwill be seen that the 'machine is capable of being operated without damage to the shoes, that it will take all kinds and sizes Without eXtra parts, that the adjustments are readily made and that a greatly in creased product can be obtained. I

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. An edgetrimmer comprising a revoluble cutter, a work table normally below the plane of said cutter, means for inclining thereon, a work table normally below the' plane of said cutter, an adjustable guide attached to said carriage, an index on said guide for indicating the initial position in which the work should be placed on said work table, adjustable means forelevating said table to its operative level, and means for moving said carriage past sa d cutter arranged to initiate such movement simultaneously with the completion of the elevation of said table. a

4:. An edge trimmer comprising a 'revoluble cutter, an operating table upon which work may be manipulated, a guidefor the Work and means for advancing said guide past said cutter to guide the work to said cutter, said guide being arranged to adjustably control the position of the Work with respect to the cutter.

5. An edge trimmer comprising a revoluble cutter, an operatlng table upon which the work may be manipulated, said table being normally below the plane of said cutter,-

means for raising said table including means for adjusting the height to which said table can be raised, an adjustable guide for the i work, and means for advancing said guide past said cutter, said guide advancing means being timed to become operative upon the completion of the rise of said table.

6. In anedge" trimmer, the combination with a revoluble cutter, and a work table, o

of a work guide consisting of end elements and a plurality of shorter elements disposed.

therebetween, means for flexibly connecting the adjacent ends of all of said elements, means for adjusting said elements separately so as to produce a substantially unbroken face of variable contour and means for moving said guide past said cutter.

7. In an edge trimmer, the combination with a revoluble cutter and a work table, of

a work guide comprising a plurality of separately adjustable units so arranged as to present a substantially unbroken face, means for moving said guide from a position of rest in one direction past said cutter and in close proximity to said table, and means independent of said last-named means for returning said guide to its original position.

8. In [an edge trimmer, the combination with a revoluble cutter, and. an adjustable Work table, of a work guide comprising laterally adjustable and longitudinally movable units having a groove formed in their rear sides, and a fixed guide roller operating in the groove tOjIllilIltitlll the guide units in the same horizontal plane. during their 1on gitudinal movement.

Intestimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

' DWIGHT A. NILES.

Witnesses:

JOHN W. KIMBALL, HENRY PENNIMAN.

Copies of this patent may be obtained forfivecents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

